Nail having a barbed fin for engaging an anchoring rod



May 28, 1957 s. YEDINAK NAIL HAVING A BARBED FIN FOR ENGAGING AN ANCHORING Ron Filed NOV. 29, 1954 INVENTOR. Sieve yea 4726M;

UnitcdStates Patent NAIL HAVING A BARBED FIN FOR ENGAGING AN ANCHORING ROD Steve Yedinak, Spokane, Wash.

Application November 29, 1954, Serial No. 471,675

2 Claims. (CI. 85-23) The present invention relates to improvements in a nail for fastening wood to concrete.

Modern construction procedures often utilize the combination of wood and concrete as cooperating structural elements in buildings. When two such elements are combined, a problem arises concerning the method of firmly securing the wood to the concrete. For example, in buildings which use concrete foundations and wooden frame members, it is necessary to lay wooden plates along the top of the concrete foundation as base members to which the upright frame members may be attached. The general practice now is to set upright bolts into the concrete foundation top while the concrete is still wet, leaving several inches of the threaded portion of each bolt protruding from the top of the wall. When the wooden plates are set on, holes are drilled in them to admit these bolts, and nuts are threaded down over the bolts to clamp the plates in place. This practice has drawbacks, however, in that the bolts are somewhat expensive, and care must be exercised in placing them so that the threaded portion of each bolt must be kept clear of concrete when the bolt is set, so that the threads are not fouled.

It is the purpose of my invention to provide a nail which will operate to fasten a wooden member to a reinforcing bar or rod protruding from a concrete element and thereby secure the wood to the concrete.

With my improved nail, it is only necessary to leave sections of reinforcing bars protruding from the concrete, or to insert any inexpensive rods in the concrete. The wooden plate is drilled to provide holes to receive the bars and is set on the concrete. My improved nails are then driven into the wooden plate adjacent the bars to secure the plate thereto. The nail itself has a thin notched fin thereon extending the length of the shank. The lower end of the nail is curved slightly, so that the nail will bend when the end strikes the concrete after passing through the plate. When the nail bends, the fin is forced against the reinforcing bar, and the notches therein engage the bar to secure the plate to it.

The nature and advantages of my invention will appear more fully from the following description and the accompanying drawings wherein the preferred forms of the invention are shown. It should be understood, however, that the drawings and description are illustrative only, and are not intended to limit the invention except insofar as it is limited by the claims.

In the drawings:

Figure 1 is a sectional view through a wooden plate on a concrete foundation illustrating my improved nail operating to secure the plate to the concrete foundation;

Figure 2 is a view similar to Figure 1 except illustrating a modified form of the nail; and

Figure 3 is an end elevated view of the nail.

Referring now to the drawings, the numeral indicates a portion of a concrete foundation to which it is desired to secure a wooden plate 11. When the founda- 3 from the rod so that the fin 18 does not touch it. As the 2,793,5 59 1C Patented May 28, 1957 tion 10 is poured, sections 12 of reinforcing rods or bars, which are commonly used in concrete construction, are set into the wet concrete at spaced intervals. The rods 12 are set so that a few inches of each rod 12 projects up from the surface to which the plate 11 is to be attached at right angles thereto. When the concrete foundation 10 has set, the wooden plate 11 is set on. Holes 13 are drilled in the plate 11 to admit the rods 12 and allow the plate 11 to seat against the foundation 10.

In order to secure the plate 11 to each of the rods 12, my improved nail 14 is utilized. The nail 14 comprises a shank portion 15, having a head 16 at one end and a To secure the plate 11 to the rod 12, several of the.

nails 14 may be driven into the plate 11 around the rod 12, each nail being positioned so that its fin 18 points toward the rod 12. Each nail 14 is set a short distance nail 14 is driven into the plate 11, the slight'bend near the point 17 tends to cause the nail to curve toward the rod 12 somewhat, but if the nail is properly set, this will be insuflicient to cause the fin 18 to contact the rod 12. Now for the nail to be clinched. to the rod, its length should be slightly greater than the thickness of the plate 11, so that when the point 17' strikes the concrete 10, the head 16 of the nail 14 will remain a short distance above the plate 11. The point 17 of the nail 14 will strike the concrete 10 at an angle due to the bend in the shank 15, and will be directed toward the rod 12. As the nail 14 is driven farther, the point 17 will slide along the concrete 10 toward the rod 12, sliding through the slot formed by the fin 18, causing the shank 15 to bend. The fin 18 attached to the shank 15 stilfens the shank, and limits the bending to the 'unstiffened point at the notch 19. In this manner, the lower portion of the fin 18, containing the serrations 20 will be moved against the rod 12. The fin 18 having opened the wood, helps the nail tip 17 to move toward the rod.

The reinforcing rod 12 ordinarily has deformations or cleats 21 thereon to grip the concrete in which it is placed. When the serrations 20 on the fin 18 are moved against the rod 12, the serrations 20 engage the cleats 21 of the rod 12, securing the nail 14, and consequently the plate 11 thereon. The serrations 20 are formed so that each of them is directed slightly toward. the head 16 of the nail 14, that is, the upper edge of each serration is substantially horizontal, while the lower edge slopes toward the point 17, as shown in Figure 1. With this construction, the serrations 2t) slice through the wood, rather than gouge it when the nail 14 is driven, and they hold more firmly against the cleats 21 of the rod 12 when engaged.

Figure 2 illustrates a modified form of the nail indicated at 14. In this form the fin 18' is secured to the shank 15 of the nail 14' as in the original form. However, the shank 15' is bent away from the fin 18' near the point 17', and the serrations 20 formed in the fin 18 are located above the notch 19.

With this form of the invention, the nail 14 curves slightly away from the rod 12 as it is driven into the plate 11. When the point 17' strikes the concrete 11, it will be inclined away from the rod. However, instead of sliding along the concrete 11, the point 17' will The shank 15 is bent remain substantially at the point where it strikes the concrete as the nail 14' is driven the remainder of the distance. The wide back wall of the nail opposes sliding of the point on the concrete. The shank 15' will bend adjacent the notch 19 and force the serrations 20 against the rod 12, as shown in Figure 2. The reason for this occurrence is that the point 17 of the nail 14 is substantially thicker than the fin 18 and in order to move sideways through the wood, will have to crush away more material than will the fin 18. Thus, the point 17 encounters more resistance than does the fin 18'. When the fin 18' is forced toward the rod 12 it cuts a slot through the wood, thus breaking a path for the shank 15' to follow it toward the rod 12.

It will be appreciated that as many as necessary of the nails 14 or 14' may be driven into the plate 11 adjacent the rod 12 to insure a firm connection.

It is contemplated that my improved nails 14 and 14' may also be used in many other applications, whenever it is desired to secure a wooden strip to a metal bar. The use of rods of other material in place of the rod 12 is also contemplated. In the event that the rod 12 is replaced by softer materials, the fin 18 or 18 will actually penetrate into the rods to secure it.

It is believed that the nature and advantages of my invention appear clearly from the foregoing description.

7 Having thus described my invention, I claim:

1. A nail for securing a wooden member to an anchored rod extending therethrough comprising a shank portion having a head at one end and a point at the opposite end, a pair of circumferentially aligned laterally projecting fins secured one above the other to one side of said shank, the adjacent edges of said fins diverging from each other from the shank toward their outer edges whereby to form a notch extending inwardly to said shank between said fins, the fin adjacent the head on the shank having a plurality of pointed teeth at its outer edge, and the end of the shank adjacent the point being curved away from the fins.

2. A nail for securing a wooden member to an anchored rod extending therethrough comprising a shank portion having a head at one end and a point at the opposite end, a pair of circumferentially aligned laterally projecting fins secured one above the other to one side of said shank, the adjacent edges of said fins diverging from each other from the shank toward their outer edges whereby to form a notch extending inwardly to said shank between said fins, the fin adjacent the point on said shank having a plurality oi: pointed teeth at its outer edge, and the end of the shank adjacent the point being curved toward said fins.

References Cited in the file of this patent UNITED STATES PATENTS 549,555 White NOV. 12, 1895 1,024,776 Hanson Apr. 30, 1912 2,128,798 Burr Aug. 30, 1938 2,376,936 Pfefier May 29, 1945 2,555,420 Richardson June 5, 1951 FOREIGN PATENTS 414,374 Italy June 18, 1946 

